/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 *
 * http://www.gnu.org/copyleft/gpl.html
 */
package l1j.jrwz.server.datatables;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;

import l1j.jrwz.L1DatabaseFactory;
import l1j.jrwz.server.utils.SQLUtil;

public class IpTable {

    private static Logger _log = Logger.getLogger(IpTable.class.getName());

    private static ArrayList<String> _banip;

    public static boolean isInitialized;

    private static IpTable _instance;

    public static IpTable getInstance() {
        if (_instance == null) {
            _instance = new IpTable();
        }
        return _instance;
    }

    private IpTable() {
        if (!isInitialized) {
            _banip = new ArrayList<String>();
            getIpTable();
        }
    }

    public void banIp(String ip) {
        Connection con = null;
        PreparedStatement pstm = null;

        try {

            con = L1DatabaseFactory.getInstance().getConnection();
            pstm = con.prepareStatement("INSERT INTO ban_ip SET ip=?");
            pstm.setString(1, ip);
            pstm.execute();
            _banip.add(ip);
        } catch (SQLException e) {
            _log.log(Level.SEVERE, e.getLocalizedMessage(), e);
        } finally {
            SQLUtil.close(pstm);
            SQLUtil.close(con);
        }
    }

    public void getIpTable() {
        Connection con = null;
        PreparedStatement pstm = null;
        ResultSet rs = null;
        try {

            con = L1DatabaseFactory.getInstance().getConnection();
            pstm = con.prepareStatement("SELECT * FROM ban_ip");

            rs = pstm.executeQuery();

            while (rs.next()) {
                _banip.add(rs.getString(1));
            }

            isInitialized = true;

        } catch (SQLException e) {
            _log.log(Level.SEVERE, e.getLocalizedMessage(), e);
        } finally {
            SQLUtil.close(rs);
            SQLUtil.close(pstm);
            SQLUtil.close(con);
        }
    }

    public boolean isBannedIp(String s) {
        return _banip.contains(s);
    }

    public boolean liftBanIp(String ip) {
        boolean ret = false;
        Connection con = null;
        PreparedStatement pstm = null;

        try {

            con = L1DatabaseFactory.getInstance().getConnection();
            pstm = con.prepareStatement("DELETE FROM ban_ip WHERE ip=?");
            pstm.setString(1, ip);
            pstm.execute();
            ret = _banip.remove(ip);
        } catch (SQLException e) {
            _log.log(Level.SEVERE, e.getLocalizedMessage(), e);
        } finally {
            SQLUtil.close(pstm);
            SQLUtil.close(con);
        }
        return ret;
    }

}
